ASTM D50-90(2005) PDF

1.1 These test methods cover procedures for the chemical analysis of yellow, orange, red, and brown pigments containing iron and manganese. The test methods apply specifically to the following pigments: synthetic hydrated yellow iron oxide, yellow ocher, red and brown iron oxides, raw and burnt umber, raw and burnt sienna, and venetian red.

1.2 The analytical procedures appear in the following order:

ASTMMethodRefer-Dry PigmentsSections encesMoisture and Other Volatile MatterD 280Loss on IgnitionCoarse Particles D 185Matter Soluble in WaterD 1208Organic Coloring MatterIron Oxide and Calcium Compounds (Reported as CaO) and Sulfates Soluble in Hydrochloric Acid and Lead Chromate (in Ochers)Calcium Carbonate (in Venetian Red)C 25Manganese (in Siennas and Umbers) and Pigment Pastes in OilPigment Content D 1208Moisture and Other Volatile MatterD 1208Nonvolatile Matter in VehicleMoisture by Distillation D 1208Coarse Particles and Skins D 185Consistency (Stormer) D 562

1.3 &solely-SI-units;

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Number of Pages :	5
Published :	09/01/2005